From NeuroLex

A repository of information relative to th … A repository of information relative to the nomenclature of enzymes. It is primarily based on the recommendations of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology (IUBMB) and it describes each type of characterized enzyme for which an EC (Enzyme Commission) number has been provided.<br />
These include<br />
* EC number<br />
* Recommended name<br />
* Alternative names (if any)<br />
* Catalytic activity<br />
* Cofactors (if any)<br />
* Pointers to the Swiss-Prot protein sequence entry(ies) that correspond to the enzyme (if any)<br />
* Pointers to human disease(s) associated with a deficiency of the enzyme (if any)<br />
We believe that the ENZYME database can be useful to anybody working with enzymes and that it can be of help in the development of computer programs involved with the manipulation of metabolic pathways.<br />
Available services include downloading ENZYME by FTP as well as report forms for a new ENZYME entry or for an error/update in an existing entry. for an error/update in an existing entry.

*Note: Neurolex imports many terms and their ids from existing community ontologies, e.g., the Gene Ontology. Neurolex, however, is a dynamic site and any content beyond the identifier should not be presumed to reflect the content or views of the source ontology. Users should consult with the authoritative source for each ontology for current information.